Confirm where the moisture sits
Look closely before wiping. Moisture on the room-side surface is different from water between sealed panes or rain entering around a frame. Note the time, weather and whether the room was used for drying laundry. Take a photograph of recurring patches on the sill or surrounding wall. If water appears after rainfall in a specific corner, avoid assuming it is ordinary condensation simply because the window also feels cold.
Remove water without soaking the frame
Use a clean absorbent cloth and work from the glass towards the sill, collecting water rather than pushing it into joints. Dry the frame and any vulnerable timber ledges afterwards. Wring the cloth into a basin, not onto the sill. Keep curtains away from wet glass and avoid leaving wet towels on the window furniture. Accessible drainage features should stay unobstructed, but do not poke tools into hidden frame cavities or dismantle window components.
Change one moisture habit and observe
Use existing extraction and ventilation as intended, especially after activities that release moisture. Keep purpose-made vents clear and follow the appliance or building guidance available for your home. Record whether the amount of water changes when laundry is dried elsewhere or the room is ventilated consistently. Persistent damp, damaged finishes or spreading mould needs the cause investigated; a cloth is not a repair. Renters should report recurring problems with photographs and dates rather than waiting for the decoration to fail.
Before you call it done
- Distinguish surface water from leaks or misted panes.
- Dry the sill as well as the glass.
- Record repeated damp and report it early.
Know the limit. Seek appropriate help for persistent damp or mould; this routine does not diagnose building defects.
